Cementing hook



Patented Oct. 22, 1940 Y 2,218,728 l CEMENTING noox poration oi DelawareApplication April 5, 1940, serial No. 321,933

Claims'.

This invention relates to apparatus employed that the cement thoroughlylls the space outsideV the casing at the lower end thereof. Theequipment for circulating the cement into' the hole in lo cludes, in theusual arrangement, a cement conducting line running directly from thepump to a closurecap at the upper end of the casing. vWith such aninstallation the casing cannot be rotated or raised or lowered duringtheoperation of cir- [5 culating the cement'into position. Thus theoperator must rely upon heavy uid pressureexerted upon the cement to tryand force-it into position and also upon expensiveyforms of cementlshoes on the casing. Often without complete success. It is an object ofmy invention to provide an apparatus whereby the casing may be movedr asi desired while the cementing job is beingperformed. I desire to allowrotary movement ofy the casingV and also vertical reciprocation, so thatI the cement can be worked about the pipe and 'thus assure that thecement completely lls thelower end of the well. n

' I wish to so support the casing and to connect the'cement pipethereto, that the' movement of the casing during cementing will :notinterfere; with the simultaneous forcing of the cement 'into position. fv

Further objects and advantages of the invention will more clearly appearfrom the description which follows taken with the drawing herewith inwhich; Y f

Fig. 1 is a side elevation of the supporting device which tion. ,f

Fig. 2,is a perspective view partly in and the elevators. Y.

, Fig. 3 is a vertical section showing the uppery end of the casing andthe cernenting connections therewith. j

In carrying out my invention I employ a swivel Aarranged to rotatablysupport an elevator B,

neck. 4 iis provided for connection with the ce-` menting hose notshown. I Y 55 The nipple 3 is connected, aty its lower'endto a I employinfcarrying out the invensection, l showing the `hook employed betweenthe swivel cementing hook 24 by a threaded engagement, withina'socket 5insaidvhook. 'Said' hook has a passage vlv therein for the cement; Alateral threaded opening in said passage has connectionV vwith aflexible 'f metallic hose y'I. Anyfordinary 5 type of rubber or fabrichose may be used. Op-

posed hooks 8 are `formed to be engaged by the hails il'of theelevatorB. y

f 'I'he elevator "is ofV ordinary construction. :It

has a body I0 adapted to engage below the upper 10 collar II uponthecasing C. -The upper `end of the casing is closed by `a nipple l2screwed into the collar I I and having a cap I3 secured thereto by meansof a coarsely threaded connection I4.. A lateral threaded port I5 in thenipple I2 provides 15 attachment for the lower end of the flexiblehose,A

n 1.- The cap I3 has oppositeupwardlyy extending ears I6 thereon to beengaged by a wrench or bar in screwing up or uns'crewingv the cap. i Y fIn vtheoperation of cementing, fluid for cleaning Q0 the well may iirstbe circulated from the pump through the goose neck 4, theswivel nipple3, the cementing hook 2li,Y the flexible hose 'I, the nipple I2 into thecasing and the well. Then the cement y When sufficient cement has beenpumped into the well, a plug may be inserted above the cement by Yremoving the capV I3 and vIrun-l may be then employed to move the plugto the bottom in the usual manner, thus forcing ther cement out of and30 up aroundthe casing.. f f

Thefcasing may be engaged by the rotary or by pipe wrenchesl or othersimilar means and rotated as desired without-interfering with thepumping of the cement into position in the well. By thus 35 moving theVcasing a proper y positioning of the cement in the hole and about thecasing is assured. No special shoes upon the casingor other devices arenecessary to assist' in placing the cement. Also, during the process ofwashing and 40 cementing the casing may be raised and lowered as desiredbythe usual hoisting mechanism connectedwith the swivel.

What I claim as new is: y

cluding a swivel, a cementinghook secured thereto, a closure member forthe upper end of the casing, an elevator connected, with said hook andengaging about saidcasing, and a flexible cement conducting memberconnecting said hook and said closure memberto conductl cement into saidcaslng.

2. A device vfor conducting cement into wellsincludingy av swivel, a uid-conducting passage therethrough, a relatively rotatable nipple there-Amay be forced intothe well by the same route. 25

i1. A devicefor cementing casing in wells in-l 45 on, a cementing hookon said nipple, an elevator supported on said hook, a casing engaged bysaid elevator, andmeans to conduct fluid from said hook to said casingpast said elevator.

3. A connection between a swivel and a well casing, including a hooksecured to said swivel, said hook having an upper hollow shank thereon-to receive uid from said swivel, a closure means for the upper end ofsaid casing, means on said hook to support said casing. and a flexiblefluid conduit connected with said hollow shank and said closure means toconduct iluid from said swivel past said supporting means to saidcasing.

n line connecting said swivel past said elevator with the interior ofsaid casing.

5. In combination a swivel, a cement hooky thereon,V a hollow shank onsaid hook to receive uid from said swivel, a casing closed at its upperend, an elevator on said hook engaging said casing, and a fluidconducting line from said hollow 10 shank to said casing.

. HAROLD L. STRADER.

